CVE-2002-1987 in Resin
Summary
by MITRE
Directory traversal vulnerability in view_source.jsp in Resin 2.1.2 allows remote attackers to read arbitrary files via a "\.." (backslash dot dot).
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Analysis
by VulDB Data Team • 08/31/2025
The vulnerability identified as CVE-2002-1987 represents a critical directory traversal flaw discovered in the Resin web application server version 2.1.2. This vulnerability specifically affects the view_source.jsp component which is designed to display the source code of web resources. The flaw arises from insufficient input validation and sanitization within the application's file handling mechanisms, creating an exploitable condition that allows malicious actors to access files outside the intended directory structure. The vulnerability is classified under CWE-22, which specifically addresses improper limitation of a pathname to a restricted directory, commonly known as path traversal or directory traversal attacks.
The technical exploitation of this vulnerability occurs through the manipulation of directory path references using the "\.." sequence, which is a standard technique for navigating up directory levels in file systems. When a remote attacker crafts a malicious request containing this sequence, the Resin server fails to properly validate or sanitize the input before processing file requests. This allows the attacker to bypass normal access controls and retrieve files from arbitrary locations on the server's file system. The vulnerability is particularly dangerous because it can potentially expose sensitive configuration files, source code, database credentials, and other confidential information that should remain restricted to authorized users only.
The operational impact of CVE-2002-1987 extends beyond simple information disclosure, as it can lead to complete system compromise when combined with other attack vectors. An attacker who successfully exploits this vulnerability can gain access to critical system files, application configuration data, and potentially database connection strings that could facilitate further attacks. The vulnerability affects the confidentiality and integrity aspects of the CIA triad, as unauthorized access to system files violates both data confidentiality and system integrity. This flaw aligns with ATT&CK technique T1566, which covers credential access through various means including path traversal attacks that can lead to privilege escalation and lateral movement within the network environment.
Organizations running Resin 2.1.2 should immediately implement mitigations including input validation and sanitization measures that prevent directory traversal sequences from being processed by the application. The most effective remediation involves implementing strict path validation that ensures all file access requests remain within designated directories and reject any attempts to navigate outside of the intended scope. Additionally, application-level firewalls and web application firewalls should be configured to detect and block suspicious path traversal patterns. System administrators should also conduct comprehensive security assessments to identify and remediate similar vulnerabilities in other applications and components that may be susceptible to the same class of attack. The vulnerability demonstrates the critical importance of proper input validation and the principle of least privilege in web application security, as outlined in various security frameworks including NIST SP 800-53 and ISO 27001 standards for information security controls.